Supplemental-tire holder.



" w.-A. FEDgmcK.

ASUPPLEMENTALITIRE HOLDER. .APPLICATION FILEDMAR. 15. 1915.

Patented July 25, 1916.A

WILLIAM A. FREDERICK, oEEos'roiv, auAssi'iCHUsE'r'rs, AssIGNoR To TWIN-RIM CoMPANY, or Bos'roN, 1vrAssACHUsETTs, A CORPORATION or MASSACHUSETTS.

T all whom itfmajz/ concern.' i v Be it lmown that-LWHJLI'AM A. FRED- ERICK, ofand 'State certain newl Supplemental-Tire Holders, of which ith following .is a specification.

. This invention relates to wheels andtires especially designedfor automobiles. 1l).

Heavy machines such as automobile trucks -frequently have double or dual tires on the Twheels, especially the rear wheels, so that they may have a wide tread. Frequentl'yvitis desirable lto pr'ovide touring cars with wide treadsl as hereinafter explained. When oneftire hasfbecome disabled, as by being ,.punctured, it usually -takes .considerabletime to either make repairs orto substitute a new tire or'thedisabled one.

The object qffm'y invention is to provide a supplemental/tire structure at low cost' and easy. applicability to position, for use 4aut mobilethan" an ordinary' demountable rim and ltire,- my improved supplemental tire being capable of being mounted along- 'side of either fan injured orlan'uninjured My inventwn consists in means whereby a suppl'e'mental, tire can. be", s e'c'ured alongside of an existing tire, Without requiring any additional hub or spokefconstruction' other than that `included.iii-'the wheel to which the supplemental tire is attached.-

Of the accompanying'drawings, Figure 1 is a side elevation of. a tirel and rim `o clenchertype, having the ola-'mp members i connected thereto all ready to be attachedto a complete wheel;

injured tire, making adouble or dual tire. Fig-3 isa view from the under side of Fig. 2.

Similar reference characters indicate similar parts in all of the views.

The felly of an ordinary or usual supl porting wheel is indicated at 12 in Figs. 2

and 3, said'felly having a rim 13 supporting a tire 14. The rim 13 and tire 14 are represented as of the clencher type. It is to be understood, however, that the felly, rim

I 'I Specification of Letters vPatent.

and useful Improvements in Fig. 2 represents aseo: tion, on a larger scale, representingmysup-i plemental tire connected alongside of'an` 1111,#`

.Patented July 25, 191e.

' Application ined Malen 15, 1e15. serial N. 14,544.

supplemental device I. or attachment "comprises a' tire 1'5 connected in the'usual manner to a rim 16, similar to'therim 13. f Secured to the inner surface of the rim 16 I at a plurality of points (3, 4 or more) are plates 17 which are, of course, curved from Y 'and tire so' far described may beof any type y jofr. character. Boston, in the county of `Sufl'olk f Massachusetts, have inventedv end to end to iitthe internal curvature of' the rim 16. Each plate is secured to the rim by ,suitable means as by'rivets 18.` The edges 19, 20 of eachplate areturned up or i curved so that one edge or the other may fitv snugly against the inner surface of the rim 13. The plates 17 are wider than the rim 16 to project beyond the sides of the latter to engage the inner surface of rim 13. The edge 2O is turned up or curved higher than the edge 19, the object of this being to' enable the supplemental -t'ire and rim to be` connected to dilierent. sized rims 13, by

simply attaching the supplemental tire and rim with-one side or the other against the supporting wheel. Each plate is provided at its mid-width with a lug 21 having anv aperture for the shank 22 of a clamp device ,having a bifurcated hooked end 23 to enand tire of the supporting wheel of the automobile, the twolrims 13, 16, bearing directly against each other and the curved edges of the several-plates 17 fitting snugly inside the rim 13, the bifurcated hooked 'i ends 23 of the several Shanks extending between the spokes of the supporting wheel and engaging the far side of the felly 12.

The felly 12 and rim 13, as a whole, oonstitutes the rim vportion of the supporting.

wheel of an automobile, as distinguished from any hub or spoke structure. The supplemental rim ,and tire has no hub or spoke structure, said supplemental tire and rim be-.s ing supported by the hub and spokes of the* original supporting wheel. It will be unl' derstood that by this structure I avoid havingthe .supplemental tire provided with any portion which extends materiallyinto the area within the rim. The, attachment is` therefore not noticeably different from an ordinary demountable rim and tire and-can,

therefore, be carriedon an automobile practically the same as the present well-known demountable rim and tire.

Each plate 17 and its lug 21 practically constitutes a bracket to which the shank of the clamp is adjustably connected. rIhe structure of the plates withthe edges 19 and 2O turned-up or bent, enables the supplemental wheel and rim to beapplied to different sizes, vdiametrically, of rims 13, by simply reversing the 'supplemental rim or tire asl hereinbefore described. Owingto the lugs 21 being at the mid-widthl of the" plates 17, this reversal can be readily effected without making any structural change, the hooked clamps serving equally as well whether the edges v19 or the edges 2O are bearing against the rim 13.

`If the user of a car suppliedwith two of my improved attachments is making a somewhat long journey and reaches road condi-- tions where single tires on the rear Wheels are not suiiicient for comfort, or to support the weight on a rough road, he can simply apply the two attachments to the two rear wheels. vWhen any one Itire becomesidisabled, it is not necessary to stop for repairs or any longer than necessary to simply clamp one of my improved supplemental devices to the side of the wheel the tire of which has become disabled. 1 Owing tov the fact that the plates are independent of each other and that each oc cupies but a short space around the interior of the rim 16, as shown in` Fig.A 1, the projecting edges 19, 20 present lips that are capable of yielding somewhat, when the nuts 24 are set up tight. The rims 13 of stock wheels are not of exactly the same diameter,

even when intended to be so made. The fact that the lips 19, 20 can give or yield slightly enables my improved supplemental rim to be tightly secured Aclosely alongside of a rim 13 which would be too small to permit this to be done ifthe lips were continuous in the form of a ring because a metal ring can not vbe reduced indiameter without buckling unless entirely re-rolled or otherwise mechanically re-formed. "L

A further. advantage of having the series of lipsv 20 so shaped as to present arcs oi' a circlelarger than that of which the lips 19 form arcs is that if the rim of a supporting wheel toV which my improvement is to be attached is of such diameterv that the lips'20 could not be made to yield or give suiiciently to enable the two rims 1G and 13 to be forced close together by the clamp de` vices, then the supplemental member can be turned so as to present the smaller series of lips 19 to the supporting-wheel, rim.

Having now described my'invention what Iclaimis: Y

A supplementalv rim and tire adapted to be connected to either one of a plurality 1ot sizes of vehicle-supporting wheels, said supplemental rim having a plurality of plates rigidly secured to it in spaced relationship, each-of said plates having its opposite edges bent and provided with lips having beveled outer faces projecting beyond the sides of the rim to form a series of spaced lips at eachside of the rim to engage the internal or concave surface of the rim of a supporting wheel, the series of lips at one side forming arcs of a larger circle than those at the 'other side, and means for clamping the supplemental rim closely to the side of the rim 'of the supporting wheel with no intervening, spaces between said rims.

In testimony whereof I have afiXed my signature, in presence of two witnesses.

' WILLIAM A. FREDERICK.

Witnesses: l

` A. W. HARRISON,

FRANKLIN P. DALY. 

